FAA, ADX, and Aircraft Dispatcher are terms and marks associated with the Federal Aviation Administration and are used in this book solely for identification and educational reference purposes. This guide is an independent publication and is not sponsored, endorsed, or affiliated with the Federal Aviation Administration, PSI Services, or any government agency. All other trademarks, service marks, and registered names mentioned in this book, including but not limited to any references to testing organizations or certification bodies, are the property of their respective owners and are used here for descriptive purposes only. No claim is made to any rights in these marks, and their use does not imply any endorsement of this publication.